Jaysun is a distinctive boys' name in United States, ranking #7963 in 2009 with 10 recorded births. This places Jaysun in the bottom 45% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2002 with 12 births ranking #5875. Since 1996, the popularity has increased by 42.9%. In 2009, approximately 1 in every 198,331 boys born was named Jaysun. FALLING Recent data shows the name is currently falling.